Cis woman cannot take huge things inside them, the cervix will be there and it will hurt, when something touches and stops there.
I´ve discussed with few cis women, who say, that they cannot take big penis inside, due to the fact, that it will hurt when it hits cervix. If Maria77 haven´t encountered such women, congratulations, but that is quite uncommon, from what I have understood.
I´m not really worried about depth. Well, just as long as it´s somewhere near normal range...